a = [1, 2, 3]
# a.insert(1, 10)
# a.insert(2, 100)
# a.insert(3, 1000)
#[1, 10, 100, 2, 3]
# a.insert(1, 1000)
# a.insert(1, 100)
# a.insert(1, 10)
b = a[0:1] + [10, 100, 1000] + a[1:]
print(a)
print(b)